diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f882f9894..b8625d5a6 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.0.1-1"
-export PIKA_PACKAGE_NAME="python-railroad-diagrams"
+export PIKA_PACKAGE_VERSION="1.2.4-5"
+export PIKA_PACKAGE_NAME="libjama"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"